68 Rambler American?

eh, looks kinda dead around here, but I'll try anyway.

I have a '68 Rambler American I6 199ci. I'm in need of an exhaust system, all of it. I can handle the bulk of the run with universal parts, but the collector pipe. Can I use a newer model Jeep one since it's practically the same motor? One quirk tho, I want to go with a 3" system since I'm in the market for a 4 barrel intake.

Thanks in advance to anyoe who might be in AMC land. Otherwise, when I finally get my lazy self underneath and pull what's left of the old system off and measure I'll let you know if it works.